John alexandeb devine



Reissued Feb. 21, 1928.

UNITED STATES'PA ,ENT OFFICE.

JOHN ALEXANDER DEVINE, OF THOROLD, ONTARIO, CANADA.

PAPER-MAKING mncnmn.

Original No. 1,582,583, dated. April 27, 1928, Serial No. 37,309, filed June 15, 1925. Application for reissue filed- December 20, 1926. Serial No. 156,057.

My invention-"relates to improvements in' paper nmlting nmchines, and the object of the invention is to devise simple and cheaply constructed means for preventing wire mesh carrying the paper stock cutting-into the wooden tops of the suction boxes longitudinally and it consists essentially-of the ,arrangemcnt and construction of parts as hereinafter more particularly explained. in Fig. 1 is a side elevation showing the wire mesh, its carrying rollers, suction boxes and my device; I

Fig. 2 is a plan view of the parts shown in Fig.1. l5 In the drawings like characters of reference indicate corresponding parts in each figure. 1

1 indicates a Wire mesh in the form of an endless band upon which the 'paper stock is distributed in the usual mariner;

2 is a brest roll and 3 is a couch roll. 4 are the suction boxes by which the superfluous moisture is drawn off from the paper pulp as'i't passes thereover. 5 is an idler roller driven by the wire mesh. The 'b're's't and couch rollers 2 and 3 and idler. roller-5- are mounted according to the usual practice in bearings, which bearings Ihavenot shown as they form no part of my invention.

6 is 'a-roller over which the lower run of the wire meshpasses. The shaft'7 of the on a stud 14 carried by a. standard 15.- The worm gear 1 is provided with a crank pin 16;

- 17 is a standard provided with a slideway 18 in which'is slidablylcarried a bearing 19 in which is journalled the opposite en of the shaft 7;

one end carried upon the projecting end of the shaft 7 and connected at its opposite end to the crank pin 16. It will be seen by this constructionthat 'nal strands of the wire mesh to cutfine transverse grooves 1n the wooden tops of of such grooves, thereby maintaining the surface of the suction box in a smooth even Y a worm gear turnably mounted up-'- 2. In a,- papfaff making machine, vthe coib bination with stationary, suction boxes and, 20 is a link provided with an eye 21 at.

, travels over said boxes, 0 a. horizontally 0s the idler roller hythetravel' altered, so that it moves over the suction boxes in constantly changing 'positi' s so as to wear the surtace of the suction ox evenly, preventing any groovlng or cutting into the suction boxes by the wire travelling thereover, constantly in the same position.

It will be understood that under ordinary conditions-the tendency is for the longitudithe suction boxes when these strands travel in an unchanging position. When, however, they are moved laterally by my device, the effect is to eliminate any tendency to the formationof these transverse grooves as the lateral movement of the longitudinal strands on the suction boxes wears away any wood which is tended to be left on each side condition.

' -Although I have described a sprocket drive-whereby my device is operated, it will of course be understood that any other driving connection may be e ployed forachieving the same r'e'su t. J

endless wire mesh, the u per plyof which cillatory uide roller for the lower ply, a worm ea driven by the latter, a crank: pin onsai ear, and a crank actuated by said pin for scillatingsaid roller. .110

' gear driven by 3. In a paper making machine, the combination with stationary suction boxes and an endless wire mesh, the u per ply of which travels over said boxes, 0 a horizontally escillatory guide roller for the lower ply, a sprocket wheel driven by the latter, a worm on the shaft of said wheel a horizontal worm said worm and having a crank pin, and a crank actuated by said pm for oscillating said roller.

' 4. A Fourdrinier machine having a device operated by the wire and means where- 'by said' device by its operation continually shifts the wire from'side to side.

' 5. A Fourdrinier machine having a device rotated by the wire and means whereby said deviceby its rotation continually shifts the wire from side to side.

6.- A Fourdrin'gsr machine having a wire roll mounted to fleet a lateral shifting of thewireand means operated'by thewire for effecting suchshiiting movement so as to continually shift the wire from side to side. '7.- A Fourdrinier machine having a wire roll mounted for swinging movement to cause the lateral shifting movement "of the wire and. means operated bythe longitudinal wire for continually swingiaf'the'same so as to shift the wire continu g' from side tosi e. i i

. A Fourdrinier machine having .a Wire 1011 mounted for swingingmovement to, ef: j feet the -lateral l 'rr ovement of the to eflectthe lateral wire, a sliding bearing 'a worm whcelcooperating with said a crank rotatable with said worm wheel and wire and means for continually effecting such swinging movement so as to shift the wire continually from side to side.

9. A Fourdrinier machine having a wire roll mounted for swinging movement to effect the side to side shifting movement of the wire and means operated by the wire for continually effecting such swinging move ment of said. roll so as to continually shift the wire from side to side, said means comprising a worm and wheel arrangement and means for moving trolled by said worm and wheel arrangement. I

10. A Fourd'rinier machine having a wire roll mounted for lateral swinging movement shifting movement of the for said roll, a worm,

a link connected with said crank and also connected with said liding bearing to effect the reciprocation of the latter.

11. A Fourdrinier machine-having a wire vroll mounted to permit swinging or'vibratory movement to efiect the lateral shifting of the wire and means for continually effecting such swinging or vibratory movement. so as to continually shift thewire from'sideto side.

lnj' -tes'timony whereof I' have hereunto aff xedjmy signature.

' QHN ALEXANDER DEVINE. I

one end of the. roll c0n- 

